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Theodor Franke
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Individual
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Individual
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Publication of GB190207742ApublicationCriticalpatent/GB190207742A/en
7742. Franke, T. April 2. Girders and beams.-A closed tubular girder or beam b of triangular or trapezoidal shape is rolled and welded, or drawn, in one piece, and may be filled with cement to prevent corrosion. The sides of the beams support the floor or ceiling sla.bs c, and the bases are protected by plates d.
GB190207742D1902-04-021902-04-02Improvement in Piping, Angular in Cross Section as a Substitute for Beams and Girders for the Support of Ceilings.
ExpiredGB190207742A
(en)
Description of Improvements in Iron Girders, Beams, Trusses, and Supports, and in rendering the Floors of Buildings Fire Proof by the use of Iron; patented by JOHN HENDERSON PORTER, of the county of Kent,(England,) March 8th, 1848